Research Topics
Species | P NielsenSummaryAffiliation: University of Hamburg Country: Germany Publications
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Publications
Bioavailability of oral iron drugs as judged by a 59Fe-whole-body counting technique in patients with iron deficiency anaemia. Therapeutic efficacy of iron(II)-glycine sulfatePeter Nielsen
Institut für Biochemie und Molekularbiologie II Molekulare Zellbiologie, Zentrum für Experimentelle Medizin, Universitatsklinikum Hamburg Eppendorf, Germany
Arzneimittelforschung 55:376-81. 2005..7 +/- 1.7 to 12.1 +/- 1.8 g/dl). FSD has therefore documented a bioavailability of at least 11% from a single daily dose of 100 mg Fe and was effective in the treatment of the anaemia in almost all patients under study...
Effective treatment of hereditary haemochromatosis with desferrioxamine in selected casesPeter Nielsen
Institut Molekulare Zellbiologie, Universitatsklinikum Hamburg Eppendorf, Hamburg, Germany
Br J Haematol 123:952-3. 2003..9 or 14.3 mg/d respectively) with weekly 500-ml blood removals. This demonstrates that DFO is an effective alternative therapy for haemochromatosis when phlebotomy is not possible...
Iron supplementation in athletes. Current recommendationsP Nielsen
Abteilung Medizinische Biochemie, Universitats Krankenhaus Eppendorf, Hamburg, Germany
Sports Med 26:207-16. 1998..Secondly, the nonspecific upregulation of intestinal metal ion absorption is reverted to normal, thus limiting the hyperabsorption of potentially toxic lead and cadmium even in individuals with mild iron deficiency...
[SQUID-biosusceptometry in iron overloaded patients with hematologic diseases]P Nielsen
Klinik fur Kinder und Jugendmedizin, Universitatsklinikum Hamburg Eppendorf, Germany
Klin Padiatr 214:218-22. 2002..Basis of the adequate treatment are appropriate diagnostic parameters which are capable to monitor the range of the individual iron burden...
Non-invasive liver iron quantification by SQUID-biosusceptometry and serum ferritin iron as new diagnostic parameters in hereditary hemochromatosisPeter Nielsen
Inst Molekulare Zellbiologie, Universitatsklinikum Hamburg Eppendorf, Hamburg, Germany
Blood Cells Mol Dis 29:451-8. 2002..Only patients with liver cell damage had increased ferritin iron saturations. In conclusion the diagnostic values of serum ferritin protein and iron to assess iron overload are limited...
Assessment of iron stores in children with transfusion siderosis by biomagnetic liver susceptometryR Fischer
Abteilung Medizinische Biochemie, University Hospital Eppendorf, Hamburg, Germany
Am J Hematol 60:289-99. 1999..The exponential decline of iron stores allows forecast of steady-state conditions of the final iron load for a particular transfusion and chelation therapy regimen...
Bioavailability of iron and cyanide from 59Fe- and 14C-labelled hexacyanoferrates(II) in ratsP Nielsen
Abteilung Medizinische Biochemie, , Hamburg, Bundesrepublik Deutschland
Z Naturforsch C 45:681-90. 1990..In the case of a severe nuclear accident, appropriate doses of "soluble" and "insoluble" Prussian blue can be used as safe and effective antidote against radiocaesium contamination...
Interaction of artificial metallic objects with biosusceptometric measurementsR Engelhardt
University Hospital Hamburg Eppendorf, Germany
Neurol Clin Neurophysiol 2004:32. 2004..Depending on the Ni-content, these objects reveal ferromagnetic properties and contribute in first order with a one parameter reciprocal distance function to the measured liver iron signal...
Impaired plasma antioxidative defense and increased nontransferrin-bound iron during high-dose chemotherapy and radiochemotherapy preceding bone marrow transplantationM Dürken
Department of Pediatric Hematology and Oncology, University of Hamburg, Hamburg, Germany
Free Radic Biol Med 28:887-94. 2000..05). Antioxidants only partially recovered to baseline values until day 14 after BMT. Our findings indicate oxidative stress after high-dose radiochemotherapy and suggest a contribution of NTBI therein...
Non-transferrin-bound iron during blood transfusion cycles in beta-thalassemia majorRegine Grosse
University Medical Center Hamburg Eppendorf, Department of Pediatric Hematology Oncology, Martinistr 52, Hamburg D 20246, Germany
Ann N Y Acad Sci 1054:429-32. 2005..The largest variation of NTBI levels between individual patients was observed at midcycle. For long-term monitoring of NTBI levels, a particular time point relative to the last blood transfusion should be selected for blood drawing...
Monitoring long-term efficacy of iron chelation treatment with biomagnetic liver susceptometryRoland Fischer
University Medical Center Hamburg Eppendorf, Department of Molecular Cell Biology, Hamburg, Germany
Ann N Y Acad Sci 1054:350-7. 2005..Because liver iron measurements by biosusceptometry are now regularly available in Europe and America, as well as quantitative MRI worldwide, these methods may be used to adjust chelation treatment regimens to body iron stores...
Monitoring long-term efficacy of iron chelation therapy by deferiprone and desferrioxamine in patients with beta-thalassaemia major: application of SQUID biomagnetic liver susceptometryRoland Fischer
Institut für Molekulare Zellbiologie, Universitatsklinikum Hamburg Eppendorf, Germany
Br J Haematol 121:938-48. 2003..A two-compartment model may predict an average chelation efficacy for desferrioxamine and deferiprone, with a saturation effect of the latter, for a certain chelation and transfusion regimen by a single liver iron quantification...
Nuclear iron deposits in hepatocytes of iron-loaded HFE-knock-out mice: a morphometric and immunocytochemical analysisBjörn Magens
Institute of Anatomy II Experimental Morphology, University Hospital Hamburg Eppendorf, Martinistrasse 52, Hamburg 20246, Germany
Acta Histochem 107:57-65. 2005..As the nuclear iron deposits corresponded electron microscopically to aggregated ferritin molecules, they represent a non-immunoreactive form of presumably denatured ferritin...
Serum ferritin underestimates liver iron concentration in transfusion independent thalassemia patients as compared to regularly transfused thalassemia and sickle cell patientsZahra Pakbaz
Children s Hospital and Research Center Oakland, Oakland, California 94609, USA, and University Medical Center Hamburg Eppendorf, Hamburg, Germany
Pediatr Blood Cancer 49:329-32. 2007..32, 0.87, and 1.2, respectively: P<0.001). Due to underestimation of LIC by ferritin levels, chelation treatment may be delayed or misdirected in patients with thalassemia intermedia...
Low dose-ethanol modulates toxic effect of iron-overloading in the liverSven Christoph Beutelspacher
Department of Immunology, Imperial College London, Hammersmith Hospital, 10th Floor, Du Cane Road, London W12 0NN, UK
J Nutr Sci Vitaminol (Tokyo) 50:78-86. 2004..An additive effect of toxicity of iron and ethanol was assumed. In this study, we examined nutritively iron-loaded Wistar rats (n = 59) (TMH-Ferrocene) additionally fed with ethanol up to 8% in drinking water for 36 wk...
The influence of deferiprone (L1) and deferoxamine on iron and essential element tissue level and parameters of oxidative status in dietary iron-loaded miceVladislav Eybl
Department of Pharmacology and Toxicology, Charles University Faculty of Medicine in Pilsen, Karlovarska 48, 301 66 Pilsen, Czech Republic
Toxicol Lett 128:169-75. 2002..The glutathione peroxidase (GSH-Px) activity and catalase activity were not affected by iron loading, however, both DFO and L1 caused a decrease of GSH-Px activity...
Does liver biopsy overestimate liver iron concentration?Roland Fischer
Blood 108:1775-6; author reply 1776. 2006
Does liver biopsy overestimate liver iron concentration?Roland Fischer
Blood 108:778. 2006
Oxidative stress precedes peak systemic inflammatory response in pediatric patients undergoing cardiopulmonary bypass operationStephan Christen
Institute for Infectious Diseases, University of Berne, Friedbuehlstrasse 51, CH 3010 Berne, Switzerland
Free Radic Biol Med 38:1323-32. 2005..g., off-pump surgery) or the resultant oxidative stress (e.g., antioxidant treatment) should be considered as possible strategies to lower the rate of postoperative complications in pediatric CPB...
Non-transferrin-bound iron in plasma following administration of oral iron drugsBernd Dresow
Inst für Biochemie und Molekularbiologie II Molekulare Zellbiologie, Zentrum für Experimentelle Medizin Universitätsklinikum Hamburg Eppendorf, Hamburg, Germany
Biometals 21:273-6. 2008..Smaller iron dosages (10 and 30 mg) gave lower but still measurable NTBI values. The physiological relevance of this finding for patients under iron medication has to be elucidated...
